Mit
Content
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
What is the ratio of the input impedance with series feedback to that without
feedback?
Choices:
a. 1 + BA
b. BA
c. B
d. 1
ANSWER:
A. 1 + BA
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
Which of the following is required to start oscillation?
Choices:
a. BA > 1
b. The phase shift around the feedback network must be 180 degrees.
c. Both BA > 1 and the phase shift around the feedback network must be 180
degrees.
d. None of the above
ANSWER:
C. Both BA > 1 and the phase shift around the feedback network must be 180
degrees.
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
Only the condition BA = _____ must be satisfied for self-sustained oscillations to
result.
Choices:
a. 0
b. -1
c. 1
d. None of the above
ANSWER:
B. 1
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In the IC phase-shift oscillator, what should the ratio of feedback resistor R f to R1
be?
Choices:
a. Zero
b. Greater than -29
c. Less than 29
d. Any value
ANSWER:
B. Greater than -29
SOLUTION:
Av = 1 + (Rf/Ri) = 1 + (1k/100) = 11
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In the Wien bridge oscillator, which of the following is (are) frequency-determining
components?
Choices:
a. Both resistors
b. Both capacitors
c. Both resistors and capacitors
d. None of the above
ANSWER:
C. Both resistors and capacitors
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
What is the typical value of quality factor for crystal oscillators?
Choices:
a. 20,000
b. 1,000
c. 100
d. 10
ANSWER:
A. 20,000
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In which of the following applications is a pulsating dc voltage suitable?
Choices:
a. Battery charger
b. Radio
c. Stereo system
d. Computer
ANSWER:
A. Battery charger
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
Across which of the following components of a power supply does the average
(dc) voltage exist?
Choices:
a. Diodes
b. Secondary of transformer
c. Capacitor filter
d. None of the above
ANSWER:
C. Capacitor filter
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
What is the purpose of an additional RC filter section in a power supply circuit?
Choices:
a. Increase the dc voltage component
b. Increase the ac voltage component
c. Decrease the ac voltage component
d. None of the above
ANSWER:
C. Decrease the ac voltage component
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In a simple series regulator circuit, which of the following components is the
controlling element?
Choices:
a. Load resistor
b. Zener diode
c. Transistor
d. None of the above
ANSWER:
C. Transistor
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
What is the ratio of the input impedance with series feedback to that without
feedback?
Choices:
a. 1 + BA
b. BA
c. B
d. 1
ANSWER:
A. 1 + BA
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
Which of the following is required to start oscillation?
Choices:
a. BA > 1
b. The phase shift around the feedback network must be 180 degrees.
c. Both BA > 1 and the phase shift around the feedback network must be 180
degrees.
d. None of the above
ANSWER:
C. Both BA > 1 and the phase shift around the feedback network must be 180
degrees.
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
Only the condition BA = _____ must be satisfied for self-sustained oscillations to
result.
Choices:
a. 0
b. -1
c. 1
d. None of the above
ANSWER:
B. 1
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In the IC phase-shift oscillator, what should the ratio of feedback resistor R f to R1
be?
Choices:
a. Zero
b. Greater than -29
c. Less than 29
d. Any value
ANSWER:
B. Greater than -29
SOLUTION:
Av = 1 + (Rf/Ri) = 1 + (1k/100) = 11
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In the Wien bridge oscillator, which of the following is (are) frequency-determining
components?
Choices:
a. Both resistors
b. Both capacitors
c. Both resistors and capacitors
d. None of the above
ANSWER:
C. Both resistors and capacitors
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
What is the typical value of quality factor for crystal oscillators?
Choices:
a. 20,000
b. 1,000
c. 100
d. 10
ANSWER:
A. 20,000
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430524.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In which of the following applications is a pulsating dc voltage suitable?
Choices:
a. Battery charger
b. Radio
c. Stereo system
d. Computer
ANSWER:
A. Battery charger
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
Across which of the following components of a power supply does the average
(dc) voltage exist?
Choices:
a. Diodes
b. Secondary of transformer
c. Capacitor filter
d. None of the above
ANSWER:
C. Capacitor filter
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
What is the purpose of an additional RC filter section in a power supply circuit?
Choices:
a. Increase the dc voltage component
b. Increase the ac voltage component
c. Decrease the ac voltage component
d. None of the above
ANSWER:
C. Decrease the ac voltage component
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Mapua Institute of Technology
Address
Muralla, Intramuros, Manila
Signature over Printed
Name , Position
Marloun P. Sejera
Faculty Member
Area of Specialization
Please indicate the subject:
(X) Electronics
( ) Mathematics
QUESTION:
In a simple series regulator circuit, which of the following components is the
controlling element?
Choices:
a. Load resistor
b. Zener diode
c. Transistor
d. None of the above
ANSWER:
C. Transistor
SOLUTION:
N/A
Reference:
Electronic Devices and Circuit Theory, 10th ed. by Boylestad and Nashelsky
http://wps.prenhall.com/chet_boylestad_electronic_10/98/25119/6430593.cw/index.html
